diff --git a/web/b3desk/endpoints/join.py b/web/b3desk/endpoints/join.py
index ee5fe876..2f99d99b 100644
--- a/web/b3desk/endpoints/join.py
+++ b/web/b3desk/endpoints/join.py
@@ -66,8 +66,14 @@ def signin_mail_meeting(meeting_fake_id, expiration, h):
     )
 
 
+# The role needs to appear in the URL, even if it is unused, so user won't
+# mix up invitation links.
+# https://github.com/numerique-gouv/b3desk/issues/93
+@bp.route(
+    "/meeting/signin/<role:role>/<meeting_fake_id>/creator/<user:creator>/hash/<h>"
+)
 @bp.route("/meeting/signin/<meeting_fake_id>/creator/<user:creator>/hash/<h>")
-def signin_meeting(meeting_fake_id, creator: User, h):
+def signin_meeting(meeting_fake_id, creator: User, h, role: Role = None):
     meeting = get_meeting_from_meeting_id_and_user_id(meeting_fake_id, creator.id)
     wordings = current_app.config["WORDINGS"]
     if meeting is None:
diff --git a/web/b3desk/models/meetings.py b/web/b3desk/models/meetings.py
index 46b13a89..fe1fd71c 100644
--- a/web/b3desk/models/meetings.py
+++ b/web/b3desk/models/meetings.py
@@ -229,6 +229,7 @@ def get_signin_url(self, meeting_role: Role):
             meeting_fake_id=self.fake_id,
             creator=self.user,
             h=self.get_hash(meeting_role),
+            role=meeting_role,
             _external=True,
         )
 
diff --git a/web/b3desk/models/roles.py b/web/b3desk/models/roles.py
index 20ac977f..a6573a2b 100644
--- a/web/b3desk/models/roles.py
+++ b/web/b3desk/models/roles.py
@@ -2,6 +2,6 @@
 
 
 class Role(Enum):
-    attendee = "attendee"
-    moderator = "moderator"
-    authenticated = "authenticated"
+    attendee = "invité"
+    moderator = "modérateur"
+    authenticated = "authentifié"
diff --git a/web/tests/meeting/test_join.py b/web/tests/meeting/test_join.py
index 1d225c14..cce52efa 100644
--- a/web/tests/meeting/test_join.py
+++ b/web/tests/meeting/test_join.py
@@ -178,7 +178,7 @@ def test_join_mail_meeting(client_app, meeting, bbb_response):
 def test_join_meeting_as_role(client_app, authenticated_user, meeting, bbb_response):
     fullname = "Alice+Cooper"
 
-    response = client_app.get(f"/meeting/join/{meeting.id}/attendee", status=302)
+    response = client_app.get(f"/meeting/join/{meeting.id}/invite", status=302)
 
     assert (
         f"{client_app.app.config['BIGBLUEBUTTON_ENDPOINT']}/join?fullName={fullname}"
diff --git a/web/tests/meeting/test_meeting.py b/web/tests/meeting/test_meeting.py
index 82d2132c..4d68bb9b 100644
--- a/web/tests/meeting/test_meeting.py
+++ b/web/tests/meeting/test_meeting.py
@@ -298,7 +298,7 @@ def test_create_no_file(client_app, meeting, mocker, bbb_response):
         "logoutURL": "https://log.out",
         "record": "true",
         "duration": "60",
-        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
+        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/moderateur/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/invite/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
         "autoStartRecording": "false",
         "allowStartStopRecording": "true",
         "webcamsOnlyForModerator": "false",
@@ -390,7 +390,7 @@ def test_create_with_only_a_default_file(
         "logoutURL": "https://log.out",
         "record": "true",
         "duration": "60",
-        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
+        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/moderateur/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/invite/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
         "autoStartRecording": "false",
         "allowStartStopRecording": "true",
         "webcamsOnlyForModerator": "false",
@@ -482,7 +482,7 @@ def test_create_with_files(
         "logoutURL": "https://log.out",
         "record": "true",
         "duration": "60",
-        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
+        "moderatorOnlyMessage": f"Welcome moderators!\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/moderateur/1/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/invite/1/creator/1/hash/{meeting.get_hash(Role.attendee)}",
         "autoStartRecording": "false",
         "allowStartStopRecording": "true",
         "webcamsOnlyForModerator": "false",
@@ -562,7 +562,7 @@ def test_create_quick_meeting(client_app, monkeypatch, user, mocker, bbb_respons
         "duration": "280",
         "meetingKeepEvents": "true",
         "meta_analytics-callback-url": "https://bbb-analytics-staging.osc-fr1.scalingo.io/v1/post_events",
-        "moderatorOnlyMessage": f"Bienvenue aux modérateurs. Pour inviter quelqu'un à ce séminaire, envoyez-lui l'un de ces liens :\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/{meeting.fake_id}/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/{meeting.fake_id}/creator/1/hash/{meeting.get_hash(Role.attendee)}",
+        "moderatorOnlyMessage": f"Bienvenue aux modérateurs. Pour inviter quelqu'un à ce séminaire, envoyez-lui l'un de ces liens :\n\n Lien Modérateur   :\n\nhttp://localhost:5000/meeting/signin/moderateur/{meeting.fake_id}/creator/1/hash/{meeting.get_hash(Role.moderator)}\n\n Lien Participant   :\n\nhttp://localhost:5000/meeting/signin/invite/{meeting.fake_id}/creator/1/hash/{meeting.get_hash(Role.attendee)}",
         "guestPolicy": "ALWAYS_ACCEPT",
         "checksum": mock.ANY,
     }
diff --git a/web/tests/test_api.py b/web/tests/test_api.py
index 9b9cc177..f9a898d9 100644
--- a/web/tests/test_api.py
+++ b/web/tests/test_api.py
@@ -8,11 +8,11 @@ def test_api_meetings_nominal(client_app, user, meeting, iam_token):
     assert res.json["meetings"]
     assert res.json["meetings"][0]["name"] == "meeting"
     assert (
-        f"/meeting/signin/{meeting.id}/creator/{user.id}/hash/"
+        f"/meeting/signin/moderateur/{meeting.id}/creator/{user.id}/hash/"
         in res.json["meetings"][0]["moderator_url"]
     )
     assert (
-        f"/meeting/signin/{meeting.id}/creator/{user.id}/hash/"
+        f"/meeting/signin/invite/{meeting.id}/creator/{user.id}/hash/"
         in res.json["meetings"][0]["attendee_url"]
     )